I read somewhere that, in receiving the Holy Oils in the Sacrament of healing of the sick, the recipient oftentimes receives a glimpse of heaven.
I think the recipient feels the profound Love of God and the joy and peace that comes with it. If it is the end of life as we know it, those around the dying person feel that same love, peace, and joy, emanating through the dying person, as they go through the process of passing from this life to the next. There is a sense of peace and a subdued joyfulness.
On the website under New Life are the stories of Rick and Marilyn. They give that indication of a sense of peace and a subdued joyfulness.
Clarence